Best Time to Fly STT to MIA: On-Time Stats by Hour & Airline
Cyril E King → Miami International
Data through July 2026 · Last updated October 18, 2026
941 flights were scheduled from Charlotte Amalie (STT) to Miami (MIA) in the last 12 months, and 81.9% of those that flew arrived on time, 4.2 points above the US average of 77.6%.
American Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Wednesday was the most reliable day (87% on time) and March the worst month (75%).
The cancellation rate was 1.1% (US average 1.8%).
STT to MIA on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| American Airlines | 81.9% | 120 min | 1.1% | 941 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly STT to MIA
On-time arrival % by scheduled departure hour (local time), 1,803 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12pm–1pm | 88.7% | 1.3% | 155 |
| 1pm–2pm | 87.2% | 0.5% | 433 |
| 2pm–3pm | 79.3% | 0.7% | 143 |
| 3pm–4pm | 70.3% | 0.9% | 112 |
| 4pm–5pm | 77.8% | 0.6% | 364 |
| 5pm–6pm | 81.3% | 0.8% | 380 |
| 6pm–7pm | 86.9% | 0.5% | 216 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on STT to MIA
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 28 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 80.7% | -1.4 pts | 3.5% | 86 |
| Summer peak (Jun 15 - Aug 15) | 84.7% | +2.5 pts | 0.8% | 260 |
| All other days | 82.1% | — | 0.5% | 1,429 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).